Determine the magnitude and direction of the current through R_1 0.68 A Left 0.3

Question

Determine the magnitude and direction of the current through R_1 0.68 A Left 0.33 A Left 0.68 A right 0.33 A right A resistor and an inductor are connected in series to a battery. The battery is suddenly removed from the circuit and replaced by a wire to complete the circuit. The time constant for of the new circuit represents the time required for the current to decrease to 25% of the original value. 37% of the original value. 63% of the original value. 75% of the original value. zero. (extra credit) In the figure, a small particle of charge -1.9 Times 10^-6 C and mass m = 3.1 Times 10^-12 kg has speed = 8.1 Times 10^3 m/s as it enters a region of uniform magnetic field. The particle is initially traveling perpendicular to the magnetic field and is observed to travel in the semicircular path shown with radius R = 5.0 cm. Find the magnitude and direction of the magnetic field in the region.

Explanation / Answer

25)

Use Kirchoff's Voltage Law, current in Bigger loop is i, Writinh Voltage equation for Bigger loop, we get

9-22i+6 =0

i = 15/22 = 0.68 Amp Left

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